Question

ABCD is rectangle from the adjacent figure AC and BD are diagonal BD is 14cm, BC is 7cm, and CD is 3cm find AD,AB,BD

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Answer 1

Step-by-step explanation:

ABCD is a rectangle

so the opposite sides will be equal.

=>AB=CD & BC=AD

As BC is 7cm,AD is equal to 7cm.

As CD is 3cm,AB is equal to 3cm.

As given in the question,BD is equal to 14cm

Answer 2

Answer:

Given AB=14cm,BC=AD=7cm

we know that the area of rectangle=l×b

area of the semicircle=

2

π×r

2

Here the radius of the big semicircle(r

1

)=

2

14

=7cm

the radius of the small semicircle(r

2

)=

2

7

cm

Area of shaded region = Area ABCD + 2 × area small semi-circle - area big semi-circle

=(l×b)+2⋅

2

1

πr

1

2

−

2

1

πr

2

2

=(14×7)+2×

2

1

×

7

22

×

2

7

×

2

7

−

2

1

×

7

22

×7×7

=98+38.5−77=59.5cm

2

Step-by-step explanation:

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